1. The problem asks to round the temperatures -179.15 °C and -290.47 °F to the nearest tenth. 2. Rounding to the nearest tenth means keeping one digit after the decimal point. 3. For -179.15 °C, look at the hundredths place (5). Since it is 5 or greater, round the tenths place up from 1 to 2. 4. So, -179.15 °C rounded to the nearest tenth is **-179.2 °C**. 5. For -290.47 °F, look at the hundredths place (7). Since it is 5 or greater, round the tenths place up from 4 to 5. 6. So, -290.47 °F rounded to the nearest tenth is **-290.5 °F**.