Marie went out for dinner with her friend. The dinner cost $24. Tax is 5% and Marcie wants to leave a 15% tip (she computed tip on the cost of dinner and tax.) How much will Marcie pay all together for
dinner?

$28.83

Step-by-step explanation:

We will use:   and then use cross multiplication.

Let's solve the tax first.

We have:

tax (percent) = 5%

dinner cost (whole) = $24

we want to solve for "part". Lets set the equation up before we plug anything in

now plug everything in:

part = $1.20

what does this mean?

Well it actually means $1.20 is the amount of money we pay in tax.

So we add that to our total.

24 + 1.20 = $25.20

Next we will do the tip. We will use the same equation as above:

tip (percent) = 15%

dinner cost (whole) = $25.20

plug everything in:

part = $3.63

That means we pay an extra 3.63 as a tip. So lets add that to our dinner cost:

25.20 + 3.63 = $28.83

So we end up paying $28.83 for our dinner in total.

answer: c, the green line

step-by-step explanation:

there is no black line, eliminate b.

simple interest implies periodic payments, but the red line shows no payments, eliminate d.

simple interest has equal payments. if paid say every day, the graph is about a straight line (actually a stairstep).

the yellow line is not straight, eliminate a.

check: the green line is straight, answer is c.

simple interest with positive interest rate gives a straight line sloping up to the right. green line:

g(t) = $100 + ($200-$100) ÷ (20 years) × (t years)

= $100 + (4%/year) × ($100)(t years)

incidentally, the yellow line curving upward represents continuously compounded interest

y = $100 × 2^(t years / (14 assuming the yellow line hits $200 at 14 years. 2^0 is 1, so y(0) = $100; 2^(14/14) is 2, so y(14) = $200.

2 apples

step-by-step explanation:

taking away equals subtraction. 6-4=2