How many different four-letter strings can be formed from the letters a, b, c, d, e (repeats allowed) if the first letter must be a vowel and the last letter must be a consonant?

Which number line represents the solution set for the inequality - x 24?

V=x^4-y^4 pick three expressions that can represent the three dimensions of the prism (each in meters)

Light travels at 186,000 miles per second. light takes about 1 1? 3 seconds to travel from the earth to the moon. calculate the distance between the earth and the moon based on the speed of light.