Which graph could represent a car that begins by increasing its speed, then travels at a constant speed, and then decreases its speed, as time increases? mark this and return

Tell whether the two rates form a proportion

The sum of five and a number n is at least 12

You have 37 coins that are nickels, dimes, and pennies. the total value of the coins is $1.55. there are twice as many pennies as dimes. find the number of each type of coin in the bank.