6. The insurance premium for a car is normally £90. With a 'no-claim bonus' the premium is
reduced by 35%. What is the reduced
premium?

7. Myxomatosis kills 92% of a colony of 300
rabbits. How many rabbits survive?

8. The population of a town increased by 32%
between 1945 and 1985. If there were 45 000
people in 1945, what was the 1985
population?

9. A restaurant adds a 12% ‘service charge'
onto the basic price of meals. How much do
I pay for a meal with a basic price of £8.50?

step-by-step explanation:

always plug in x. in this case, x equals 4.

i'm going to first solve 4(2+3x)

1) 4(2+3(4)) use pemdas to solve.

i'm going to multiply whats in the parenthesis first, so 3 times 4=12.

2)4 (2+12) i'm then going to multiply 4 by both numbers in the parenthesis (because multiplying comes before adding)

4 times 2= 8.   4 times 12= 48

4) (8+48)= 56 (answer)

i'm then going to solve 8+12x and plug in 4 for x.

1) 8 +12(4)

multiplying comes before adding, so i'm gonna multiply 12 and 4.

12 times 4= 48.

2) 8+48=56

both equal the same!

this is the formula: v = the value of investment at the end of the time period

p = the principal amount (the initial amount invested)

r = the annual interest rate

n = the annual frequency of compounding (how many times a year interest is added)

t = the number of years the money is invested

^ means raise to the power of

step-by-step explanation:

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