A student who waits on tables at a restaurant recorded the cost of meals and the tip left by single diners. Meal Cost $4.75 $6.84 $12.52 $20.42 $8.97
Tip $0.50 $0.90 $1.50 $3.00 $1.00

Correlation: Equation:

r=

If the next diner orders a meal costing $10.50, how much tip should the waiter expect?

Abucket of paint has spilled on a tile floor. the paint flow can be expressed with the function p(t) = 6(t), where t represents time in minutes and p represents how far the paint is spreading. the flowing paint is creating a circular pattern on the tile. the area of the pattern can be expressed as a(p) = 3.14(p)^2 part a: find the area of the circle of spilled paint as a function of time, or a[p(t)]. show your work. part b: how large is the area of spilled paint after 8 minutes? you may use 3.14 to approximate pi in this problem.

Taylor graphs the system below on her graphing calculator and decides that f(x)=g(x) at x=0, x=1, and x=3. provide taylor some feedback that explains which part of her answer is incorrect and why it is incorrect. f(x)=2x+1 g(x)=2x^2+1

Simplify each expression for 18, 20, and 21