If a gas-filled balloon rises 40 feet in the 1st minute, 60 feet in the 2nd minute, and 80 feet in the 3rd minute, how many feet will the balloon rise during the 15th minute?
a. 300 feet
b. 320 feet
c. 340 feet
d. 360 feet
e. 380 feet

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

Aof 12 , we to a of 4 to on a .of 4 be ?

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