Which math expression represents the phrase? 9 times the sum of a number and 7

a. 9 · n+7

b. 9 · (n+7)

c. 9 · (n - 7)

d. 9 · (n · 7)

A railway car is 3.2m in diameter and 17.2m long. estimate the cost of painting the outside of the railway car, if a can of paint covers an area of 40m squared and costs $35

The price of diesel is $1.479 per litre. It cost Steve $83.80 to top up his van with diesel. The fuel tank has a capacity of 95 litres. How many litres of diesel did Steve buy?

Working together, it takes two different sized hoses 20 minutes to fill a small swimming pool. If it takes 30 minutes for the larger hose to fill the swimming pool by itself, how long will it take the smaller hose to fill the pool on its own?

Explain in words how to simplify (153^2) ^7

674 (3+4) 2 - (21:3 + 4.2) | 14-3.1 + 23 - (5+1) * 2

1 = 18, W = 10. h = 2

What is the expanded form of (x-2) (x+2)

Which of he following statements is true of a reflection? Select all that apply. It is an isometry. It slides a plane. The transformation is done over a line of reflection. It flips a plane about a fixed line.

What is the solution of x=2+x-2squared

Two thirds of a number is 46. Find the number