Caleb bought groceries and paid \$1.60$1.60dollar sign, 1, point, 60 in sales tax. the sales tax rate is 2.5\%2.5%2, point, 5, percent.

The cost of the groceries is $64 and Caled paid in total $65.60 including the sales tax.

Solution:

Sales tax: $1.60

Sales tax rate: 2.5%

Using a rule of three:

If $1.60 represents 2.5%

     x     represents 100%

x=($1.60)(100%)/(2.5%)

x=$64

The groceries cost $64

Caleb paid in total=$64 (Cost of the groceries) + $1.60 (sales tax)

Caleb paid in total=$65.60

The price of Caleb's groceries, before tax, is $64.

Given

Total paid amount = $1.6

Sales tax rate: 2.5%

Percentage calculation is determined by multiplying by 100 to get a number or fraction.

Let, the price of groceries be x.

If Caleb paid 2.5 of sale tax, That means he must have paid 2.5 % of x.

Therefore,

The price of Caleb's groceries, before tax, is;

Hence, The price of Caleb's groceries, before tax, is $64.

To know more about Percentages click the link given below.

link

step-by-step explanation:

here's what happens:

1) the graph of f   = x^2 is shifted 2 units to the right.

2) the resulting graph is reflected in the x-axis, so that the parabola now opens down.

3) this final result is transformed up by 5 units.

x = 3 ± √(5+y)