Which could be the dimensions of a rectangular prism whose surface area is greater than 140 square feet? check all that apply.
6 feet by 2 feet by 3 feet
6 feet by 5 feet by 4 feet
7 feet by 6 feet by 4 feet
8 feet by 4 feet by 3 feet

It is 6 feet by 5 feet by 4 feet , 7 feet by 6 feet by 4 feet, and 8 feet by 3 feet by 7 feet (I just took the test)

= 5

step-by-step explanation:

to find the 15th term substitute n = 15 into the nth term formula

= (- 3 × 15 ) + 50 = - 45 + 50 = 5