What value of x makes this equation true? 12.x- 15 = 6 - 3x​

Aculture started with 3000 bacteria. after 5 hours it grew to 3900 bacteria. predict how many bacteria will be present after 9 hours

Olive's solar powered scooter travels at a rate of 30 miles per hour. what equation can she use to calculate her distance with relation to the time she traveled? h=hours m=miles 1. h=m+30 2. m=30h 3. m=h+30 4. h=30m

You buy 4 items that cost 2.69 14.45 8.05 13.95 what is the estimated total round to the nearest dollar