log3(81) = log3(3^4) = 4.

log4(16) = log4(4^2) = 2.

log5(25) = log5(5^2) = 2.

log7(49) = log7(7^2) = 2.

Product A has sales of 300 out of total sales of 1000, which is 30%.

Product D's sales in Q4 were $2000, and total sales were $10000, so it represents 20%.

The average sales figure is (100 + 120 + 150 + 110) / 4 = 120.

The average sales over the four quarters was 100.

Product B grew from 400 to 560, which is a growth of 40%.

The overall trend in sales was increasing over the four quarters.

The overall trend shows an increasing pattern throughout the year.

The sales for Product D increased from $2000 in Q1 to $2600 in Q2, which is a 30% increase.

The sales increased from 100 to 120, which is a 20% increase.

The sales figure in Q1 was 100.

The sales figure in Q1 was 100.

The sales figure in Q2 was 120.

The sales figure in Q4 was 110.

Sales for Product C grew from $2000 in Q2 to $2500 in Q3, a growth rate of 25%.

Sales grew from 120 in Q2 to 150 in Q3, which is a growth rate of 25%.

Product D's sales decreased each quarter according to the bar chart.

The total sales across all quarters was 500.

The total sales for all products in the first quarter is $9000.

The total sales for Product B over all quarters is $12000 as per the bar chart.

The total sales for the year is 100 + 120 + 150 + 110 = 480.

Amount = P(1 + r)^n = 1000(1 + 0.05)^2 = 1000(1.1025) = $1102.50

CI = A - P; A = P(1 + r)^n = 1500(1 + 0.10)^4 = 1500(1.4641) = $2196.15, CI = 2196.15 - 1500 = $696.15.

Compound Interest = 2500(1 + 0.07)^2 - 2500 = 2500(1.1449) - 2500 = 2862.25 - 2500 = 362.50

Compound Interest = 2500(1 + 0.07)^3 - 2500 = 2500(1.225043) - 2500 = 3062.61 - 2500 = 577.50

Compound Interest = 3000(1 + 0.07)^2 - 3000 = 3000(1.1449) - 3000 = 434.70, rounded to $420.00

Compound Interest = 4000(1 + 0.09)^2 - 4000 = 4000(1.1881) - 4000 = 752.40