The amount of salary earned varies directly with the number of hours worked. If Gary earns a salary of $48 for 8 hours worked. How much will Gary earn if he works 12 1/2 hours?

An equation of the line tangent to y=x^3+3x^2+2 at its point of inflection is

Can someone pls ! pls answer all. no explanation needed..

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.