How to simplify - 3x (x²+3x-1)

21 divided by (3+4) x 9 - 2 Squared

What is the multiplicative inverse 7/8

A student earned $508.40 in a two week period why was the rate of pay per week

Emma wanted to make a bedcover, 80cm by 70cm, with squares of quilted fabric. What were the dimensions of the largest squares she could use?

Darren places a 18 foot ladder so that it reaches 14 feet above the ground. what is the distance between the wall and the base of the ladder

What would be equivalent to 2a-16?

Vance used the associative property to write (4.5m+7/8) - 9 as the equivalent expression 4.5 (7/8-9). Did Vance apply the associative property correctly? Why or why not? Yes, the terms with variables should be written first.

find the median and mean of the data. which reflects the best measure of center? 28,32,65,159,22,20,33

A Chemist has 100g of 25% acid solution. How much of these solution he needs to drain and replace with 70% acid solution to obtain 100g of 60% acid solution?

Margie is certain that every time she parks in the municipal garage it costs her at least $ 2.25. If the garage charges 25cents plus 25cents for each half hour, how long is Margie 's car parked? Margie 's cost is at least $2.