Sally and martha had the same number postcards. after sally sold 18 of her postcards, martha had 4 times as many postcards as sally. how many postcards did each girl have to begin with?

Mr. Smith can swim 5 laps of the school pool in 3 minutes, Mr. Moton can swim 6 laps in 4 minutes, Mr. Stanley can swim 4 laps in 2 minutes. Who is the fastest swimmer?

The sum of three consecutive number odd integers is 18 less than five times the middle number find the three integers

The maximum height of an asian elephant is 9.8 feet. what mixed number represents this height

What is the difference in the graphs of f (x) = x^2 and f (-x) = (-x) ^2? A. The graphs appear to be the same because f (-x) is a reflection over the y-axis B. The graph is a reflection over the x-axis C. The graph is rotated 90 degrees D.

Find the GCF using list of factors number 9

Victoria and margaret left their apartment at the same time traveling in the same direction. victoria drove at 55 mph and margaret drive at 70mph. how many miles was it before margaret was 30 miles ahead of victoria?

Is 336 inches greater or less than 18 feet

A recipe uses 1/3 cup of brown sugar to make 18 cookies. How many cups of brown sugar are needed to make 45 cookies?

What times what equals 90

Is 6 a rational number