Which of the following steps could be used as a shortcut method to multiply 12 by 50?
a. divide 12 by 2, then multiply that result by 50
b. add 12 and 50, then multiply that result by 10
c. multiply 12 by 100, then divide that result by 2
d. multiply 12 by 5 and then multiply that result by 100

The label on the car's antifreeze container claims to protect the car between ? 40°c and 125°c. to convert celsius temperature to fahrenheit temperature, the formula is c = 5 over 9 (f ? 32). write and solve the inequality to determine the fahrenheit temperature range at which this antifreeze protects the car. ? 40 > 5 over 9 (f ? 32) > 125; ? 40 > f > 257 ? 40 < 5 over 9 (f ? 32) < 125; ? 40 < f < 257 ? 40 < 5 over 9 (f ? 32); ? 40 < f 5 over 9 (f ? 32) < 125; f < 257