Am I correct for the first choice I picked? Because I'm really not sure...

If I'm not please correct it and give me the other two expressions.

Identify three expressions that can be used to approximate the measure of ∠A.

What are the three expressions that could be used to find the measurement of
Please show all the work on how you got your answers.

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.

17 in long 1.3 ft wide and 8in high what is the volume

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76