Explain what means for a number to be a solution of an inequality

If there are 220 members of the 7th grade, then how many students can be expected to prefer the zoo?

Tony had 30 toy cars and Giovanni had 6 times more than tiny how many cars did Giovanni have?

Doug and Ken are meeting for lunch at Rodrigo's Mexican Restaurant. Doug's work place is 5 miles from the restaurant and Ken's work place is 7 miles from the restaurant.

What is the relationship between the 6s in the number 660,472?

What fraction lies exactly halfway between 2/3 and 3/4? a) 3/5 b) 5/6 c) 7/12 d) 9/16 e) 17/24

Is this true or false 276 times 13 = 276 times 7 + 276 times 6 = 1,932 + 1,656 and why?

1. Yousaf deposits $5000 in a savings account at his local bank. The account pays 5.5 % interest compounded annually. At the end of 6 years, how much will he have in his account?

A researcher measures 200 counts per minute coming from a radioactive source at noon. At 3:00pm, she finds that this has dropped to 25 counts per minute. What percentage of the original source will remain at 6:00pm?

The probability of a spinner stopping on 5 is 1/9. the probability of the spinner stopping on 6 is 4/9. what is the probability of the spinner stopping on 5 or 6? a. 4/9 b. 4/81 c. 5/9 d. 5/18

What does an algebraic expression always have?