please need help on this questuion please answer in i need to submit it in 30min please answer this queation please

[tex]5 \times1 \frac{12}{13} [/tex] me

Savannah had 40 iris blooms last year this year she had 15% more iris blooms how many more hours blooms did savannah have this year

The half-life of a certain material is 0.004 second. approximately how much of a 20-gram sample will be left after 0.016 second? a. 5 grams b. 16 grams c. 0.32 gram d. 1.25 grams