Brian works as a tutor for $7 an hour and as a walter for $10 an hour. This month, he worked a combined total of 87 hours at his two jobs. Let t be the number of hours Brian worked as a tutor this month. Write an expression for the combined total dollar amount he earned this month. Total earned (in dollars)

The size of a certain cell is 2.5*10^-9m. another cell is 1.5*10^3 times larger. how large is the larger cell in scientific notation?

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?

The equation shown below represents function f. f(x)= -2x+5 the graph shown below represents function g. which of the following statements is true? a. over the interval [2, 4], the average rate of change of f is the same as the average rate of change of g. the y-intercept of function f is less than the y-intercept of function g. b. over the interval [2, 4], the average rate of change of f is greater than the average rate of change of g. the y-intercept of function f is greater than the y-intercept of function g. c. over the interval [2, 4], the average rate of change of f is the same as the average rate of change of g. the y-intercept of function f is greater than the y-intercept of function g. d. over the interval [2, 4], the average rate of change of f is less than the average rate of change of g. the y-intercept of function f is the same as the y-intercept of function g.