Is a mathematical phrase involving at least one variable and sometimes numbers and operation symbols also known as exprssion

What is 30% of 40% of 2/5 of 2500? 1=160 2=120 3=180

what is 52.752 rounded to the nearest tenth?

The quotient of a number x and the sum of 3 and 7. X is 20.

What number is 100,00 more than seven hundred two thousand, eighty-three

What is calculus in term of definition

5y - 3z + 4y - 1z - 3y; y = 3 and z = - 2

An architect represents a 9 inch height as inch on a scale drawing. Which of the following scales did the architect use? 1 foot = inch 1 foot = inch 1 foot = inch 1 foot = inch

86% of senators support a bill. What fraction of senators support the bill?

Lettuce is packaged in four bags to a box. if there are 3.5 boxes of lettuce in a cooler, how many bags of lettuce would there be?

Christy drove 300 miles on her vacation. she drove an average of 1.25 times faster on the secont 150 miles of the trip than she did on the first 150 miles. what expression represents the time she spent driving? let x=her speed on the first half