A shop sells biscuits. 3 vanilla biscuits and 2 chocolate biscuits cost $60 while 1 vanilla biscuits and 2 chocolate biscuits cost $48. a) Write a pair of simultaneous equations to represent the information given above.

What is the perimeter, p, of a rectangle that has a length of x + 8 and a width of y − 1? p = 2x + 2y + 18 p = 2x + 2y + 14 p = x + y − 9 p = x + y + 7

Solve for x, y, and z. show all steps.

Suppose that the price p, in dollars, and the number of sales, x, of a certain item follow the equation 4 p plus 4 x plus 2 pxequals56. suppose also that p and x are both functions of time, measured in days. find the rate at which x is changing when xequals2, pequals6, and startfraction dp over dt endfraction equals1.5.