The formula s=30fd relates the speed s in miles per hour a car was traveling to the length d in feet that the car skidded when brakes were applied. the variable f is the coefficient of friction, which varies depending on the road surface and the condition of the tires. which set of numbers contains the value of s for f = 0.5 and d = 63?
select one:
a. whole numbers
b. rational numbers
c. integers
d. irrational numbers

Three times the difference of federico’s age, and 4, increased by 7, is greater than 37. what are possible values of federico’s age?

The u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck  $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?

Read the excerpt from the strange case of dr jekyll and mr. hyde what do dr. jekyll's thoughts reveal about him in this excerpt? [t]he inmates of my house were locked in the most rigorous hours of slumber, and i determined, flushed as i was with hope and triumph, to venture in my new shape as far as to my bedroom. i crossed the yard, wherein the constellations looked down upon me, i could have thought, with wonder, the first creature of that sort that their unsleeping vigilance had yet disclosed to he is jealous of those who can sleep through the night. he is revered for his scientific advances. he is interested in studying the movements of the stars he is proud and enthusiastic about his initial results.