C + 5d = -13
4c - 5d = 48

Solve the simultaneous equations.

c=__
d=__

Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.

Pls brainliest will be awarded if answer is correct

Is there an x intercept in the equation 60*1.15^x