2. In the first year, Geoff’s garden produced 6 bulbs. In the second year, it produced 12=6·2 bulbs, and in the third year, it produced 24=12·2 bulbs. If this pattern continues, then he can expect 24·2=48 bulbs in the fourth year, 48·2=96 bulbs in the fifth year, 96·2=192 bulbs in the 6th year, 192·2=384 bulbs in the 7th year and 384·2=768 bulbs in the 8th year.
Answer 2: correct choice is C.
3. Given n(n – 1) – 5 you can find:
- for n=1, 1·(1-1)-5=-5;
- for n=2, 2·(2-1)-5=-3;
- for n=3, 3·(3-1)-5=1;
- for n=4, 4·(4-1)-5=7.
Answer 3: correct choice is D.
6. Given the function rule f(x) = x² – 5x + 1,
f(-3)=(-3)²-5·(-3)+1=9+15+1=25.
Answer 6: correct choice is C.
7. Suppose you earn $10 each hour you babysit and your total earnings E depending on the number of hours h you babysit is
E(h)=10·h.
Answer 7: correct choice is A.
8. If Melanie charges $4.50 per hour, then she she charges $4.50·x for x hours. Plus $5.00 for supplies, then the function rule is
y=4.50x+5.00.
Answer 8: correct choice is B.
14. The sale price of apples at a local grocery store is $1.35 for the first pound and $1.10 for each additional pound. If x is the number of sold pounds then 1 was sold for $1.35 and rest x-1 were sold for $1.10. This means that
y=1.10(x-1)+1.35
Answer 14: correct choice is A.
