Hi Mike, Can you please explain Question 11, Test 6, section 3 ? I know the parabola opens downward, but I’m confused after that. Thanks.
Hi Mike, I’m asking about SAT 8, Section 3, Number 7. Is it always best to immediately plug in answer choices on questions like this? For the algebraic practice, I rewrote the equation as a quadratic and solved for (x=5) and (x= -1). Then sub’d each value back into the given equation to find that only (x=5) worked. OK…but what a time-killer at #7 out of 20. Any other solution path to consider? Thanks!
Hi Mike, Test 7, Section 4, Number 38. Probability: I keep losing track trying to think this through. Other than the table provided, is there a chart I can draw that will help me “see” the probabilities? Or, what’s the best / quickest way to manage this one? Thanks !
Hi Mike, Can you work the solution for Test 7, Section 3, #13? Thanks!
Hi Mike, I find these Qs confusing and I lose valuable time trying to think my way through them (usually get them wrong anyway!) What’s a good stepwise approach? Thanks!
If 6 < |x-3| < 7 and x < 0, what is one possible value of |x| ?
Hey Mike, Is there a way do to this sequence problem without using the
“S=n[a1 + a…]” formula?
In an arithmetic sequence, each term after the first is found by adding the same number to the preceding term. If the sum of the first six terms of an arithmetic sequence is 78 and the sixth term is 23, what is the second term?
A) 3 B) 4 C) 7 D) 10 (The correct answer is 7)
If (ax+2)(3x-5b) -bx^2 = -11x^2+36x-20, what is the value of a+b? Correct ans is -1. Is it possible to solve for expression?
This is considered an “easy” Q. Answer is 6, but I keep getting 7.
If f(x)=3x-1 and g(x)=4x+2, what is the value of g(f(0)+2)?
Functions – – Ugh!
A function is defined for x and y such that f(x,y) = -2xy + y + x – 4. So, for x=2 and y=3, f(2,3)= -2x2x3+3+2-4 = -12+1 = -11. If x and y are to be chosen such that f(x,y) = f(y,x), then which of the following restrictions must be placed on x and y?
A) x>0 and y>0
B) x<0 and y<0
C) x = y
D) No restrictions are needed
Hi Mike: I get tripped up by factoring Qs like this, especially “NOT” Qs… What’s the best way to solve this? Tks!
Factoring the polynomial x^12 -9 reveals a number of factors for the expression. Which of these is NOT one of the possible factors?
A) x^6 +3
B) x^6 -3
C) x^3 + [radical 3]
D) x^3 – [radical 3]
E) x – [radical 3]
Hey Mike, I am pretty strong in word probs, and on this one, I keep getting an answer of 7 chips, but correct answer says 11 chips. I don’t get it !
Erin and Amy are playing poker. At a certain point in the game, Erin has 3 more chips than Amy. On the next hand, Erin wins 4 chips from Amy. Now how many more chips does Erin have than Amy?
A) -1
B) 1
C) 7
D) 11
E) 14