In February, Mrs. Mitchem ordered 45 books and spent $1500. in April, she ordered 70 books and spent $2300

(A) Write an equation that represents the total cost (in dollars) of books ordered each month.

(B) Use the equation to predict the cost of ordering 20 books.

NEED HELP ASAP PLEASE!

Graph a sine function whose amplitude is 3, period is 4π , midline is y = 2, and y-intercept is (0, 2) . the graph is not a reflection of the parent function over the x-axis. use the sine tool to graph the function. the first point must be on the midline and the second point must be a maximum or minimum value on the graph closest to the first point.