Page 802 - Algebra 1

21.
(112)
*22.
(112)
23.
(97)
24.
(10 0)
25.
(102)
26.
(105)
27.
( (1 1 0 0 6 6) )
28.
(107)
29.
(107)
30.
(Inv 11)
Multiple Choice Which system of equations has the solution (-1, 1)? A y = x2 B y = x2
y=x+6 y=6 C y = x2 D y = x2
y = -2x - 1 y = -x + 6
Analyze A system of three equations consists of a quadratic, given by
y = x2 - 3, and two linear equations. One linear equation intersects the parabola at two points. If the second linear equation is parallel to the first, how many solutions does the system have? Explain.
Accessories Candida has plans to shop for hair bows and does not plan on spending more than $20. Each big bow costs $5 and each small bow costs $2. Write an inequality and graph it to describe the situation.
Solve -x2 + 2 = -7x by using a graphing calculator. Round to the nearest tenth. Multiple Choice Solve x2 + 7 = -42.
A 7 B ±7 C no solution D ±7√ 1 PhoneChains Inordertorelayinformationquickly,staffataschooluseaphone
chain. The superintendent first notifies 3 people of a snow day. In the second set of calls, these 3 people each call 2 people. Each person called then calls 2 other people. How many sets of calls need to be made to notify 96 people?
Multi-Step A square frame is to be made so that its side length is √ x + 1. a. What is the perimeter of the square?
b. For what value of x will the perimeter of the frame be equal to 8 units? Generalize Look at the function f(x) = - 0.5⎢x . How can you find the direction of
the “V” without graphing it?
Football The distance d from the goal post in feet of a football during a field goal
kick is represented by the function d = ⎪60t - 90⎥ where t is the time in seconds. If the ball were kicked at 80 feet per second how would the graph change?
Write, in order, the function that grows the slowest to the one that grows the fastest: exponential, linear, quadratic.
Lesson 115 787