Alyssa multiplied 3.22 and 1.63 as shown, but she forgot to put a decimal point in the answer.

Kevin has a spinner that has 10 equal sections and 2 sections of each color—red, blue, green, yellow, and purple. kevin spins the spinner 180 times. kevin determines about how many times the spinner will land on red or green, and his work is shown below. -kevin has the formula reversed; it should be the total number of sections over the number of red or green sections. -kevin should have used a 4 in the numerator because there are 2 red sections and 2 green sections. -kevin should multiply by the number of sections in the spinner rather than the total number of spins. -kevin calculated the prediction correctly and did not make any mistakes.

Sonia works at a sporting goods store. she earns $415 per week plus a 5.25% commission on her sales. one week, her sales are $2,200. what is her total income for the week?

Will bought 3 college textbooks. one cost 32$, one cost 45$, and one cost 39$. what is the average price of his book?