Tony invests $3,000 dollars in an account earning 12% interest per year. How long will it take him to make $3960 dollars in simple interest?

3 years
5 years
8 years
11 years

Find the value of x for which line a is parallel to line b

The sum of the first eight terms of an arithmetic progression is 9m + 14. the fifth term of the06 progression is 2m - 6, where m is a constant.given that the first term of the progression is 26,find the value of the common difference, d and thevalue of m.

Alex measured the length of an item to be 3.7 cm. the actual length is 3.5 cm. what is alex’s percent error?