(6 and one-half + 2 and three-fourths) minus 1.5 times (4.5 divided by 0.5)Step 19 and one-fourth minus 1.5 times (4.5 divided by 0.5)Step 27.75 times (4.5 divided by 0.5)Step 37.75 times 9Step 469.75Where did Cecilia make her first mistake?step 1step 2step 3step 4

During your cycling trip, you and your friends often stayed in hostels. the prices of these are listed below. hostel standard room (price per night) with breakfast (price per night) super sleep hostels £22.45 £28.65 normandy nights £18.55 £25 zzzola hostels £24.50 £30.99 belgian beds £11.20 £18.55 night-time rest days ? £33 what is the range in cost for a single night, including both standard room prices and with breakfast prices?

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.

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.