Practice Solving

Question 1

find the axis of symmetry

f(x)= 2x^2 - 4x

Answer 1

1

Question 2

find the axis of symmetry

y= 6x^2-7x+2

Answer 2

7/12

Question 3

find the axis of symmetry

f(x)= 6a-4a^3+3

Answer 3

3/4

Question 4

Greg paid $150 for 10 apples. How much does he need to pay if he buys 25 apples?

Answer 4

$375

Question 5

if y varies directly as x and y=56 when x=8, what is the value of y when x=10?

Answer 5

70

Question 6

if y varies inversely as the square x and y=10 when x=3, what is the value of y when x=5?

Answer 6

18/5

Question 7

if y varies directly as x and z and y=16 when x=2 and z=4, what is the equation of the variation?

Answer 7

y=2xz

Question 8

if y varies directly as x and z and y=100 when x=5 and z=4, what is the equation?

Answer 8

y=5xzf

Question 9

if y varies directly as x and inversely as z when y=40 and x=8 and z=2, what is the equation?

Answer 9

y=10x/z

Question 10

solve.
5^0 * (a^2)^3

Answer 10

1a6

Question 11

solve.
(6a^4)^3

Answer 11

216^12

Question 12

solve.
(12m^8a^2)^2

Answer 12

a^4

Question 13

solve.
(2g^10r^6a^5ce^9)^5

Answer 13

32a^50r^30a^25c^5e^45

Question 14

solve.
(4a^2b^4c^8
——————–
2ab^2c^3 ) ^2

Answer 14

4a^2b^4c^10

Question 15

solve.
(3a^4b^6c^2d^1
————————
4a^3c^9d^5 ) ^2

Answer 15

16c^14d^8