Janice is trying to earn $30 to buy a necklace. she has saved $5.25. she earns $2.25 per hour weeding her grandmother's garden and she earns $5.50 per hour selling seashells at the flea market. will janice have enough to buy the necklace if she works in the garden for 2 hours and at the flea market for 4 hours? use the inequality 2.25y + 5.50z + 5.25 ≥ 30.

Yes

Step-by-step explanation:

2.25y + 5.50z + 5.25 ≥ 30

where y  is the hours spent weeding and z is the hours spent selling seashells

y = 2 and z = 4

2.25(2) + 5.5(4) +5.25 ≥ 30

4.50 + 22 + 5.25  ≥ 30

31.75  ≥ 30

This is true so she has enough money

i don't know

step-by-step explanation:

answer:

at time x=0 we have 1000, at time x=1 we have 2000, at time x=2 we have 4000.  

so that's an initial value of 1000 and a ratio of 2,

y = 1000 (2^x)

hope this !