Hello Mike, I was struggling to make sense of question #6 on the Math (No calculator) section on the SAT Practice Test #8. Can you please explain the steps to properly solve it. Thank you for your time.

# I do not understand question #4 pg 156 advanced systems of equations?

I do not understand question #4 pg 156 advanced systems of equations?

# Hi Mike, can you explain how to solve SAT 8, Section 3, #6 as a “system of equations?” Thanks.

Hi Mike, can you explain how to solve SAT 8, Section 3, #6 as a “system of equations?” Thanks.

# A memory chip is designed to hold a number of transistors and heat sinks…

KHAN Q:

A memory chip is designed to hold a number of transistors and heat sinks. There must be at least 1 heat sink for every 2000 transistors to prevent overheating. Also, each transistor has an area of 2.0 x 10^-10 mm^2, each heat sink has an area of 3.6 x 10^-6 mm^2, and the total area of transistors and heat sinks must be at most 2 mm^2. What is the approx. max. # of transistors that the chip can hold according to this design?

A. 2.78 x 10^2 B. 5.56 x 10^5 C. 1.0 x 10^9 D. 1.0 x 10^10

Ans=C. S.O.S, PLZ!

# Test 3 Section 4 #36

Test 3 Section 4 #36

# Test 1 Section 4 #28!

Test 1 Section 4 #28!

# If 13≤31-2x≤39, which of the following represents all possible values of x?

If 13≤31-2x≤39, which of the following represents all possible values of x?

(A) -9≤x≤4

(B) -4≤x≤4

(C) -4≤x≤9

(D) 9≤x≤22

(E) 22≤x≤35

How should I go about doing this question, and what’s the quickest way? Thanks for your help!