What number is to 100 as 4 is to 78?

Mary 's car will go 261 miles on 14.5 gallons of gasoline in highway driving. a) How many gallons will it take to drive 1641 miles from her house to a friend's house? b) How far can the car be driven on 139 gallons of gasoline?

Explain how to use grouping symbols to organize information appropriately.

1.5, 5/6, √16, 0.7, - 9, - √2, 0, π What are the whole numbers?

Find the inverse of f (x) = 2x + 3

For how many values of x: (4.9 cm < x < infinity) is it true that ex = 0?

Data was collected on the average winter temperature and the number of days with snow of a random group of cities in the United States.

What is x + 1 = 1/2x + 2

Answer to the problem ryan is thinking of a number. when he multiplies this number by 6 and then subtracts 15 from the answer, he ends up with his original number. what number is ryan thinking of?

Three times the difference of a number x and seven is twenty-three minus the sum of three times a number x and two. what is the value of x?

What is greater than 1 cup