Your family bought 4 sandwiches and 3 salads. Spending $24. Let x be the cost of a sandwich and y be the cost of a salad. What are the possible prices of the sandwiches and salads?

x = 3

And, y = 4

Step-by-step explanation:

x = 3

y = 4

The computation of the possible prices of the sandwiches and salads is shown below:

Let us assume the x be the cost of the sandwich

And, the y be the cost of the salad

Now

4x + 3y = $24

Here we assume  x = 3

y = 4

So

4(3) + 3(4) = $24

12 + 12 = 24

$24 = $24

5.779 x 10^-8 =0.00000005779

Step-by-step explanation:

The E-8 at the end means the number is multiplied by 10^-8.

So 5.779E-8=5.779 x 10^-8

A negative power means move the decimal place that many places to the left

So 5.779 x 10^-8 =0.00000005779