Evaluating
functions
functions
what is ?
g(x) = 3x − 3; Find g(−6)
g(-6)=-21
simplify this equation
2t(3t+2)+5t
6t2+9t
what solution is this ?
x=7
one solution
y=6x+2
y=1/6x=1/3
what is ?
p(a) = −4 3a ; Find p(−1)
p(-1)=-1/64
simplify this equation
10k+2k(-8k-5)
-16k2
what solution is this ?
3=4
no solution
y=10x+2
x=2
what is ?
g(a) = 4a; Find g(2a)
g(2a)=8a
simplify this equation
-m(2m+3)-8
-2m2-3m-8
what solution is this ?
x=x
many solution
y=8x+4
x=4
Renting a canoe costs $10 plus $28 per day, which is expressed as f(x) = 28x + 10. What does the 3 in f(3) represent? Then find f(3)
3 days; $94 is the total cost for 3 days
4 friends evenly divided up an -slice pizza. One of the friends, Harris, ate fewer slice than he received.
42
Lisa had a equation 5x+20 and Sally had y=10x+5 which one is more grater?
Lisa
Ms. Kitts works at a music store. Last week she sold 6 more than 3 times the number of CDs that she sold this week. Ms. Kitts sold a total of 110 CDs over the 2 weeks. Which system of equations can be used to find l, the number of CDs she sold last week, and t, the number of CDs she sold this week?
y=3x+2
The math club goes to an amusement park. Student tickets cost $10 each. Teachers go for free. The bus costs $28. This is expressed as f(x) = 10x + 28. Find f(4) and explain what it means.
$68; it costs $68 for 4 students to go to the park.
Dylan has been saving up his money and now he had d dollars . Dylan has spent $25 on a model car write and expression on how he can represent his money
d=-25
john had a equation y=1x+30 and Mike had a equation y=16x+2 which one is grater ?
Mike
A large pizza at Palanzio’s Pizzeria costs $6.80 plus $0.90 for each topping. The cost of a large cheese pizza at Guido’s Pizza is $7.30 plus $0.65 for each topping. How many toppings need to be added to a large cheese pizza from Palanzio’s Pizzeria and Guido’s Pizza in order for the pizzas to cost the same, not including tax?
y=0.65x+6.80