I need the answers to the try these please and thank you

1)c=4.5%

2)d=25%

3)t=4%

4)Radio-15.38%

Step-by-step explanation:

1. let c be the rate of commission payable.

-Given the amount sold is $6500, and the commission paid is $292.50, the rate of commission is calculated as:

The commission rate is 4.5%

2.Let d b the rate of discount.

-Given the regular price is $34 and the discount amount is $8.50, the discount rate is calculated as;

Hence, the discount rate is 25%

3. let t be the tax rate chargeable on any item sold.

-Given that the marked price is $59.75 and the sales tax is $2.39, the tax rate can be calculated as;

Hence, the sales tax rate is 4%

4. #Determine the discount rate in I:

#Determine the discount rate in II:

Hence, the Radio sale has a better discount rate of 15.38% compared to the headset's 15.15%.

b. 2

step-by-step explanation:

the slope of a line =δy/δx

δy= y₂-y₁

δx= x₂-x₁

therefore, using the points (-2,-3)   and (3,7) we can calculate gradient as follows:

m=(7--3)/(3--2) (a number minus a negative number the sign changes to a plus)

m=(7+10)/(3+2)

=10/5

=2

3-4

step-by-step explanation:

the answer is 3-4 because both 45 and 60 has a multiple of 15.

45/3=15

60/4=15

therefore the odds against selecting a red is 4-3