Please help!! Do SAT prep courses really help improve your test results? Design an experiment to answer this question. Suppose you have 200 subjects to work with.

Answer this question only if you know the answer! 30 points and

Jonathan pays $1.90 per pound for potatoes. he buys 8.3 pounds of potatoes. he determines that he will pay $15.77, before tax, for the potatoes. which best describes the reasonableness of jonathan’s solution? jonathan’s answer is reasonable because there are two decimal places in the factors and two in the product. jonathan’s answer is unreasonable because there are three decimal places in the factors and two in the product. jonathan’s answer is reasonable because is 16, and 16 is close to 15.77. jonathan’s answer is unreasonable because is 8, and 8 is not very close to 15.77.

What is the measure of ac? 5 units 13 units 26 units 39 units 3x- 2b 6x + 9