The United States has a total area of 3,796,742 square miles. Estimate the total square area as a single digit times a power of
10. (use rounding and then convert it into scientific notation)
Show work.

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 perimeter of square abcd? units units 28 units 37 units

Can someone answer this question? : )