Colin invests £1500 into a savings account the bank gives 4% compound interest for the first 3 years and 5% thereafter. How much will Colin have after 4 years to the nearest compound?

Need on this one asap im almost done with this subject

Aculture started with 4,000 bacteria. after 5 hours, it grew to 5,200 bacteria. predict how many bacteria will be present after 19 hours. round your answer to the nearest whole number.

Iwill arward ! , i if bt ≅ eu , bu ≅ et , prove: ∠b ≅ ∠e. fill in the blanks: draw segment ut ≅ bt≅ bu ≅ △ubt ≅ △